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Regulatory Capital Requirements - Required Ratios (Details) | 12 Months Ended |  |  |
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Dec. 31, 2015 | Jan. 01, 2019 | Jan. 01, 2016 | Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |  |
Tier 1 common equity, (to risk-weighted assets), Minimum Capital Requirement, Ratio (as a percent) | 4.50% |  |  |
Tier 1 capital (to risk-weighted assets), Minimum Capital Requirement, Ratio (as a percent) | 6.00% |  |  | 4.00%
Capital Required for Capital Adequacy to Risk Weighted Assets | 8.00% |  |  | 8.00%
Tier 1 capital (to average assets), Minimum Capital Requirement, Ratio (as a percent) | 4.00% |  |  | 4.00%
Phase-in period | 4 years |  |  |
Scenario, Forecast |  |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |  |
Minimum ratio of Common Equity Tier 1 capital to risk-weighed assets |  | 4.50% |  |
Minimum ratio of Common Equity Tier 1 capital to risk-weighed assets, capital conservation buffer |  | 2.50% | 0.625% |
Tier 1 common equity, (to risk-weighted assets), Minimum Capital Requirement, Ratio (as a percent) |  | 7.00% |  |
Minimum ratio of Tier 1 capital to risk-weighted assets |  | 6.00% |  |
Tier 1 capital (to risk-weighted assets), Minimum Capital Requirement, Ratio (as a percent) |  | 8.50% |  |
Minimum ratio of Total capital to risk-weighted assets |  | 8.00% |  |
Capital Required for Capital Adequacy to Risk Weighted Assets |  | 10.50% |  |
Tier 1 capital (to average assets), Minimum Capital Requirement, Ratio (as a percent) |  | 4.00% |  |

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- Definition Tier One Common Equity Required For Capital Adequacy To Risk Weighed Assets, Capital Conservation Buffer + References No definition available. + Details
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- Definition Tier One Common Equity Required For Capital Adequacy To Risk Weighed Assets, Capital Conservation Buffer, Phase In Period + References No definition available. + Details
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- Definition Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets, Without Capital Conservation Buffer + References No definition available. + Details
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- Definition The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 + Details
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- Definition The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 + Details
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- Definition The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 + Details
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